The 2010 Civic is coming up for an oil change, and I have two quarts each of M1 EP and AFE available in 0w20. The AFE is in unopened quart bottles dating back at least three years, and I need to use it somewhere. The Civic has suddenly become a 500+ mile per week vehicle, 90% highway, so I am think that this mix should be good for the coming winter and hopefully 10k miles. Any differing opinions?
'01 Volvo V70XC, 224k, 0w40 M1
'16 Accord, 10k, soon to be 0w20 M1 EP